CAJ | 학술논문

以2003年7月3-4日淮河流域系统性降水和2003年8月2-3日江西等省的局地热对流性降水个例为例，利用AREM模式进行数值模拟，分析了陆气通量对两种不同类型降水的影响。结果表明，陆气通量通过改变大气层结稳定度，影响大气中不稳定能量的聚集、释放，从而对这两次降水过程产生影响。由于水汽来源不同，陆气通量对两类降水的影响程度存在显著差异，对于水汽主要来源于地表蒸发的局地热对流性降水，陆气通量不仅使大气动力结构场显著改变，还使中高层大气水汽含量发生明显变化，导致降水发生时间、强度均发生显著改变；对于水汽主要来源于远程输送的系统性降水，陆气通量所引起的大气层结稳定度变化只对动力结构场产生一定影响，对中高层水汽含量影响微弱，对降水过程和降水量也影响较小。
이2003년7월3-4일회하류역계통성강수화2003년8월2-3일강서등성적국지열대류성강수개례위례，이용AREM모식진행수치모의，분석료륙기통량대량충불동류형강수적영향。결과표명，륙기통량통과개변대기층결은정도，영향대기중불은정능량적취집、석방，종이대저량차강수과정산생영향。유우수기래원불동，륙기통량대량류강수적영향정도존재현저차이，대우수기주요래원우지표증발적국지열대류성강수，륙기통량불부사대기동력결구장현저개변，환사중고층대기수기함량발생명현변화，도치강수발생시간、강도균발생현저개변；대우수기주요래원우원정수송적계통성강수，륙기통량소인기적대기층결은정도변화지대동력결구장산생일정영향，대중고층수기함량영향미약，대강수과정화강수량야영향교소。
Taking the systemic precipitation process in Huaihe River basin during 3-4 July 2003 and the thermo-convective local precipita- tion process in Jiangxi during 2-3 August 2003 for example, the impacts of surface fluxes on two types of precipitation are studied by using numerical simulation based on AREM model. The analysis shows that the surface fluxes, by changing the stability of atmospheric stratifica- tion, affect the gathering and releasing of unstable energy in the atmosphere, thus influencing precipitation processes. Because of the different vapor sources, the different effects of the surface fluxes on two types of precipitation are remarkable. For the thermo-convective local precipi- tation which happened in Jiangxi province during 2-3 August 2003, the surface fluxes can influence not only the field of dynamic structure, but also the water vapor contents in the mid-and upper-level. In contrast the systemic precipitation which happened in Huaihe River basin during 3-4 July 2003 is relatively less influenced by surface fluxes. The surface fluxes only have a weak effect on the field of dynamic struc- ture, but nearly no influences on the water vapor contents in the mid-and high-level.